A Comprehensive, Evidence-Based Literature Review of the Surgical Treatment of Rectus Diastasis.

[BACKGROUND] Rectus diastasis is a common condition that can result in a protruding abdomen, causing cosmetic and functional disability. Although it is usually repaired during abdominoplasty or herniorrhaphy, there is a lack of consensus with regard to the repair indications and optimal surgical techniques. The goal of this study is to provide an updated review of the surgical techniques used for rectus diastasis repair and their comparative efficacy.

[METHODS] In accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, the PubMed, Embase, and Cochrane databases were searched for articles that discussed the surgical management of rectus diastasis and reported on either outcomes, complications, or recurrence rates. Data detailing surgical techniques were extracted, and pooled analyses of complication and recurrence rates were performed, controlling for surgical approach, common variations in technique, and an associated herniorrhaphy.

[RESULTS] Thirty-seven studies describing 45 techniques were included. An open rectus diastasis repair was performed in 24 of the studies. After controlling for an associated herniorrhaphy, there was no statistically significant difference in surgical complication and recurrence rates between open and laparoscopic approaches (p = 0.165 and p = 0.133, respectively). Although a double-layer suture closure was associated with a significantly lower rate of complications (p = 0.002), no significant difference was found for suture type absorbability.

[CONCLUSIONS] Surgical repair of rectus diastasis is safe and effective through both open and laparoscopic approaches. Although suture type absorbability does not affect complication or recurrence rates, a double-layer suture closure can decrease surgical complications. The pooled analysis of complication and recurrence rates can help improve informed consent and patient education.